2 Harvard Medical School, Boston, Massachusetts; Division of Immunology, Boston Children's Hospital, Boston, Massachusetts.
3 Institutional Center for Clinical and Translational Center for Clinical and Translational Research, Boston Children's Hospital, Boston, Massachusetts.
4 Harvard Medical School, Boston, Massachusetts; Department of Dermatology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.
5 Harvard Medical School, Boston, Massachusetts; Dermatology Section, Division of Immunology, Boston Children's Hospital, Boston, Massachusetts. Electronic address: Tina.Ho@childrens.harvard.edu.